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,9 @M m S.1 w M0, qm 1 m uw N.. mw /w Kt ,f u A .An H 2,@ u DMG G t LXa mmp M 7u 4HIT Z DA W BM RR m LB E D T N .M Uu. m3 jm P4 A7, L U6 mmm F my@ M n o o e. m N wm@ L .1, www5 Q Minneapolis, in the county of Hennepin and ject of the invention is improvement of the teeth, and so on, thus making the second 'a different system of movements substituted.

'of the feed movements, and in such prior `movements increased by the space of one- UNITED STATES PATENT OFFICE.

CASPER Il. REDFIELD, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR, BY MESNE- ASSIGNMENTS, TO Tl-IE ,CHICAGO MATRIX MACHINE COMPANY.

ES'CAPEMENT DEVICE FOR MATRIX-MAKING MACHINES. f

SPECIFICATION Application ined March 22, 1889.

T0 tZZ whom it may concern.-

Be it known that I, CASPER L. REDFIELD, a citizen of the United States, residing at State of Minnesota, have vinvented certain new and useful Improvements in Escapement Devices for Matrix-Making Machines, of which the following is aspeciiication.

My invention relates to devices connected with the electrically-operated mechanism in a' matrix-making machine for causing and controlling a variable feed of the matrixbody for spacing the impressions. The ob` devices for operating the escapement, whereby the devices used for one system of movements canbe readily removed and others for In prior devices Vno provision is made for the substitution of one set of escapement devices for another for changing the quantities devices the minimum movement was meas-` ured by the space of one tooth of the scapewheel, the next movement by the `space of two teeth, the third movement by three movement twice the extent of the first, the third three times the first, and so each of thetoot-h. i

The purpose of my improvements is to enable feed movements to be made that are not necessarily multiples of the minimum movement, and for the further purpose of enabling the speedy substitution of escapement devices that will change the quantities of the feed-movements.

My present devices relate to escapement mechanism of the same general character as that shown in prior applicationfor patent made by me March 18, 1589, SerialfNo. 303,657.

In the accompanying drawings, i'nwhich my improvementsare illustrated, Figure `l is a plan view of the escapement devices. Fig. 2 is a sectional View thereof on the line 0c of Fig. l. Fig. 3 is a sectional detail of a portion of the scape-wheel and lever devices, and Figs. 4, 5, and Gare details of the escapement-lever. v i

In said drawings, A designates a portion of the machine-frame.

D, tulcrumed at its end to ,ries the free pawl c. ,ver E are formed steps l,

Thesestops are normally below @which they .could be engaged by `and are thrown up singly by levers f, that 75 carry armatures. f on their outer arms, and

over the last preceding measure.

forming part of Letters Patent No. 416,743, dated December Io, 1889.

Serial No. 304,317. (No model.)

B is the rack connected with the matrix-carriage, and by reasonof springs connected with such carriage has a n constanttendency to move in the direction of the-arrow z. In engagement with this rack is a pinion b, that is formed at the base of a sleeve b on a post a, secured in the base of the frame A. On this sleeve is mounted an escapement-wheel C, that turns with the pin- 6o ion and sleeve in the direction of the arrow z. Over the wheel is a lever or pawl-carrier the frame at D. One of the arms d carries a pawl c, that engages the teeth of thescape-wheel to restrain movement. .The other arm d has a widened end, in which is'a curved slot d2. On the lever D is fulcrumed, over the center of the es- Acapement-wheel, a second lever E, that car- 1 On the end of this le` 7oV 2, 3, 4, 5, and 6, for s3, S4, and S5. the plane at the. lever E, 1

engaging the stops S, S2182,

are acted upon by electro-magnets F.

The arrangement ot' the steps l` 2 3, dec.,

'and their respective stops s s s2, dre., may be `such that vthe minimum movement shall be 8o Athe space of two of the scape-Wheel teeth, the second measure of movement, controlled by the step 2 and stop s', equal to the space of four teeth, and the other longer movements, controlled by the steps 3 4, &c., and stops s2 s3, 85 i dmc., each increasing bythe space of two teeth This is the arrangement for ,the lever E.- (Shown in full lines in Fig. 1.) The lever E (shown in dotted line in Fig. l) is adapted' to cause a min` 9o imum movement equal to three teeth, and to produce longer movements, in sequence increasing bythe space of three teeth each.

The steps of the levers E E are gaged according to the space required by the respective dies in the machine for which thelevers are 'designed to space the matrix, and thus there may be provided, by the substitution of the levers E E', circ., a feed movementcorresponding with the requirements of the par- Ioo ticular dies it is designed to use for, making.

impressions.

The lever E has a spring e for retracting it from the stops, one end of the spring being attached to the lever-arm (Z and the other end inserted in the hooke, attached to the back of the lever E. The return movement of the lever E is limited by a pin ci in the slot d2 of the lever-arm d. By unscrewing the thumb-screw g the lever E can be lifted olf, the spring passing' out of lits hook e, and another lever, as E', having different steps, substituted. The lever D carries an armature H, to throw the lever over and free the pawl c from engagement, io permit the rack to rotate the scape-wheel, and the lever is re'- turned from the magnet 7L by means of a spring c'. I Y

' In operation, when it is desired that a feed movement should be made, the pawl-carrier D is moved toward the right, which may be done by a circuitY completed through the mag net 7L by any suitable electrical devices, cans# ing the disengagement of the pawl c and engagement of the pawl c with the teeth of the scape-Wheel. rl`he wheel being thusfree to'V turn makes a partial rotation, carrying with it the engaged lever E or E', as the case may be, until one of the lever-steps engages the stop s s', risc., that has been lifted to position simultaneously with the act that freed the pawl c, and further rotation of the scapewheel' is thus stopped. When the lever D is again relieved from action of the magnet h, the springvlretracts it to position to cause re-engagement of the pawl or detent c, and this movement of the lever D serves also to cause disengagementof the pawl c', whereupon the springe will retract the lever E, and the devices will then again be in position for another feed movement.

Generic features of invention herein disclosed and not herein claimed relative to the stepped lever and co-operating stops'andthe means for actuating them are reserved to'be claimed in an application for patent by me led' March 18, 1889, Serial No. 303,657.

Having described my inven tion,whatI claim, and desire to secure by the Letters Patent, is-

l. In a matrix-making machine, the com Vbination, with the feed-escapement thereof and the stop-pins, of interchangeablelevers pivoted to the prime lever, carrying pawlsl and stepped to engage the stops by different measures of movement, substantially as set forth.A

2. The combination, in a matrix-making machine, with the escapement for controlling the matrix-feed, of an electrically-operated lever .carrying the holding-pawl, and a removable stepped lever pivoted to the former and carrying the second pawl, and stops-for -limiting the throw of such steppedlever.'

3. The combination, in a matrix-making machine, with the scape-wheel and a lever carrying the holding-pawl, of a second lever carrying the free pawl and' having steps proportioned to the measurement of feed required, the spring holding the latter lever, and means, substantially as described, for

removing said stepped lever and substituting therefor a differently-stepped lever.

4. Ina matrix-making machine, in combination with a rack connected to the matrixcarriage, a' pinion, a scape-wheel rotated thereby, a lever pivoted to swing over the wheel and engage therrtceth at one side, an armature and magnet for disengaging the same, a second lever pivoted on the first and engaging opposite teeth of the wheel and having stepped notches on its outer arm, meansfor substituting therefor similar levers with different-sized stepped notches, and electrically-operated stop-pins therefor whose arrangement is constant7 substantially as set forth.

5. In a feed-escapement for a matrix-machine, a scape-wheel, a prime-lever carrying the holding-pawl on one lateral arln and having a slot in the other lateral arm, a removable secondary lever intermediately pivoted, carrying the free pawl and having a pin in said slot, a spring secured to the former and detachably connected to the latter lever, stepped notches on the outer arm of the removable lever, and stops therefor, substantially as set forth.

6. In an escapement for a'. matrix-feed', a prime lever carrying the holding-pawl, as'ec'- ondary removable lever pivotedl thereto carrying theV free pawl, stops for ,engaging the latter lever to limit its throw, andsteps on its outer arm arranged to permita Wheel movement equal to two or more teeth' for each step, substantially as set forth.

7. In combination with afeed-escapement, avreciprocating holding-pawl carrier,` interchangeable revolble carriers connected thereto, provided with a free pawl and having, respectively, steps of varying extent, and a series'of stops (1o-operatingvv therewith, and means for projecting them separately into the path of the stepped pawl-carrier, substantially as set forth.

S. In a matrix-machine feed-escapement, a reciprocating holding pawl carrier, interf changeable free-pawl carriers'pivoted thereto and having arms stepped to produce different degrees of feed movement, and aV series Ofstops in radial alignment adapted to be projected separately into the plane of movement of said arms, for the purpose set forth.

9. The combination, with a feed-escapement for amatriX-machine, of interchange'- able stepped revoluble pawl-carriers, and cooperatingstops arranged to be projected separately to engage them, whereby the feed movements may be varied, substantially as set forth. i

CASPER L. REDFIEED.

Witnesses:

P. H. GUNCKEL, E. M. SCHUMANN.

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